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Newcomers DBPro Corner / How to write "does not equal"

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Butter fingers
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Posted: 18th Oct 2007 19:49
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OK, so, call me a retard. I don't care.

In my current code, enemies are given factions through a string array
ie
Entity_faction$(x)="yardies"

say I have 10 factions , and I want an entity to know when he's not near another entity of his faction...

how do I say "doesn't equal"

as in

if Entity_faction$(x)=Entity_faction$(y)
will find if entities x and y are in the same faction. what do I use instead of a "=" to find if they are not in the same faction?
I don't want to use and "else", because...well, because I tried it and it doesn't work!

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pcRaider
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Posted: 18th Oct 2007 20:32
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Quote: "I don't want to use and "else", because...well, because I tried it and it doesn't work!"


It is strange.
Will you show a cord?
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Veron
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Posted: 19th Oct 2007 12:41
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I always thought "does not equal" was expressed like this: !=


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Butter fingers
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Posted: 20th Oct 2007 02:59
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Thanks. Does <> work for string as well as numeric values? I have used it elsewhere but assumed it meant "is greater or less than" and wouldn't work with a string.

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Slayer93
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Posted: 20th Oct 2007 03:02
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You could always use not but I think I heard it has some bugs, what I usually do is make an if else endif statement for does not equal type statements probably not the best way to do it though.

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HeavyAmp
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Posted: 20th Oct 2007 07:12
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Yeah it seems to work with Strings



Better to be dead, than to live your life afraid.
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Hayer
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Posted: 20th Oct 2007 21:27
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thanks! omg my code is now 23ms faster ^^

Spread your games!
http://forum.thegamecreators.com/?m=forum_view&t=108800&b=5
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TDK
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Posted: 21st Oct 2007 10:59 Edited at: 21st Oct 2007 11:00
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Quote: "I have used it elsewhere but assumed it meant "is greater or less than""


It does!

If you have the number 10, then any other number which is less than 10 or greater than 10 doesn't equal 10.

It's just referred to as 'not equal to' because when dealing with strings it doesn't make sense to talk about 'less than' or 'greater than' another string.

TDK_Man

* TDK's Game Programming Forums - Open To All - DB & Team Request Boards *

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calcyman
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Posted: 21st Oct 2007 13:28
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Well if something is not equal it's got to be either greater than or less than!

Your signature has been erased by a hyper-intelligent pan-dimensional being (a mod)
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Seannydog
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Posted: 24th Oct 2007 14:42
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slightly obvious that one clacyman

Nothings impossible
These forum signatures are meant to hold 200 characters. 200 characters my as
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Vidiot
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Posted: 26th Oct 2007 16:49
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Actually, being able to use greater or less than when trying to compare and sort text strings alphabetically would be a useful thing. "Aaron" would be less than "Apple" alphabetically. I know you can do it with CHR$() but that would only work one charactor at a time.

The answer to Life, the Universe, and Everything? "Tea for Two". Deep Thought was Dyslexic.
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Mr Kohlenstoff
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Posted: 27th Oct 2007 13:56
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In fact it is "greater or less than". You can also compare strings this way in DBP, so I don't know where the problem is.



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David R
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Posted: 27th Oct 2007 19:06 Edited at: 27th Oct 2007 19:08
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Quote: "So how is "abc" greater or less than "yzx"? Again, "greater or less than" applies to algebra, not to a progarmming language when comparing strings. A strings is either equal to another or not.
"


Remember, strings are effectively a sequence of numbers - each character is represented by an individual number (an ASCII code presumably in this case)

So if each character in one string is <> (not equal to) the character in the other string, then they're not equal


09-f9-11-02-9d-74-e3-5b-d8-41-56-c5-63-56-88-c0
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jason p sage
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Posted: 30th Oct 2007 03:44
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Yup - He has a point

"A" < "B" is true - Because ASCII code for "A" is less than "B"

"B" > "A" is true - Because ASCII code for "B" is greater than "A"

"A" <> "B" is true - Because "A" does fall in the "less or greater" than "B" criteria for a true evaluation.

"A" <> "A" is false - because "A" is NOT greater or Less than "A"

In Basic - that's how it works. NOW in C#, and C++ - the "!=" literally stands for NOT EQUAL. One could argue its the same thing - and you're not wrong - but neither is calling it what is is "Greater than or less than"

YOU ARE ALL CORRECT


http://www.jasonpetersage.com/?PAGE=ironinfantry&SECTION=ironinfantry
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